Cheaper LNG transportation

I read that ultra gigantic mega LNG (methane) ocean transporters could be a Billion US$ (as compared to 200 million US$ now) This is a way to make them for vastly less, perhaps just a tenth that.

Just build the giant pressure vessel then place it at deep water such that the external pressures match those from the LNG. along with equipressure the mass load is minimized.

completely isolated from humans as well as surface structures the precision of the engineering is milder.

If things get really crazy you could just sink it along the deepwater route where even if the container imploded it might become a giant pile of methane hydrates Talk about Deep Horizons.

Its possible that those people that repeatedly move a giant bag of water or ice towing companies could benefit from being the upper surface of a connected LNG transporter. The big bag of moving water keeps things away from the very deep LNG while also possibly running off LNG. Middle East area Cities or countries with LNG facilities would also have waterports as well, bringing benefit to many of those countries.

Cheap transport of LNG reduces incentives to war.